Daniel mills



(No Model.)

D. MILLSt BUTTON HOLE SEWING MAGHINL.A

Patented Mar. 3, 1885.,v

- M Hummm 1w IWI-l 'Y 'I UNrTsn STATES PATENT Ormes.l

DANIEL MILLS, OF PHILADELPHIA,

UNITEDy STATES AUTOMATIC BUTTON HOLE SEWING PANY, OF SAME PLACE.

BUTTON-HOLE s PENNSYLVANIA, ASSIGNOR TO THE MACHINE COM- EWlNG-NIACHINE.

I SPECIFICATION forming part of Letters Patent No. 313,438, dated March 3, 1885.

I Application filed April 5, 1884. (No model.)

To @ZZ whom it may concern:

Be it known that I, DANIEL MILLs, a citizen of the United States, and a resident of Philadelphia, Pennsylvania, have invented certain Improvements in Button-Hole Sewing-Machines, of which the following is a specification.

My invention consists of certain improvements in the construction of the buttonhole Ic sewing mechanism for which I applied for Letters Patent of the United States August 6, 1883, Serial No. 102,914, the main object of my present improvements being to make the attachment more compact. This object I attain as more fully described hereinafter, reference being had to the accompanying drawings, in which- Figure 1 is a plan view of my improvement. Fig. 2 is a sectional plan on the line l 2, Fig.

2o 3. Fig. 3 is a side View looking in the direction ot' the arrow l, Fig. 1; and Fig. 4 is a transverse section on the line 3 4, Fig. 1.

To facilitate the explanation and comprehension of my present improvement, I have used the same letters of reference, so far as applicable, as in my application above referred to.

The base H of the attachment is provided with the usual throat-plate, h, by which it 3o may be applied to the bed-plate of a sewingmachine, and motion is imparted to the movable parts of the device from the reciprocating needle-bar of the said machine, a pin on this needle-bar being adapted to an open slot,

3 5 b, in an arm ofthe bell-crank lever D, pivoted to the upright d on the base H. This lever D occupies a position at right angles to that occupied by the similar lever in the attachment shown in my previousY application referred to, and the lever F, pivoted at f to the base-plate, and vibrated by the lever D, lies transversely across the base-plate, below the vibrator G and slide G, instead of occupying a position alongside them.

The lever F carries at its outer end the pin or anti-friction roller l, for acting on the arm Z of the friction feed-disk N, Figs. 1, 3, and 4, which is mounted to turn on the xed pin R on the base-plate H. I have not illustrated .the details, of this friction-feed, nor will it be necessary to describe them, as they may be similar to those described in my former patents and applications. Suffice lit to say that the reciprocating motion of the needle-bar imparts an intermittent rotaryvmot'ion to the disk N through the medium of the levers D and F, the extent of this feed motion being regulated by the screw-stop r, which limits the return movement of the arm Z under the action of the pull-spring r', Fig. l.

The vibrating plate G is pivoted to a pin, g, on the base, Fig. 2, as heretofore, and carries the slide G', with its cloth-clamp K, and the longitudinal feed motion is imparted to this slide from the disk N by means ofl its carngroove n acting on an anti-friction roller, m, on the bent arm M, pivoted at m' to a lug on the base, and connected by the adjustable bolt m2 to the arm m', which in turn is connected to the vibrator through the medium of the link or pitman L. (Indicated by dotted lines pitman was a long rod forked to embrace the cam carried by the disk N but I prefer to use the short link shown in the accompanying drawings. y

'Ihe devices for imparting the vibrating motion to the plate G are similar -tothose described in my previous application; butinstead of mounting the three-cornered cam P and its ratchet-wheel p on a separate pivotpost, I mount them, as shown in Figs. 2 and 4, on the same post, R, on which the disk M and its stop-cam are mounted; and intermittent' rotary motion is imparted to the cam P by the pawl p (on the vibrating lever F) en` gaging with the teeth of the wheelp. This enables me to dispense with the extension G2 on the vibrator, and to pivot the yielding spring-arms E E', Fig. 2, directly to the under side of the vibrator, thus obtaining a much more compact device with a more direct action of the operative parts than in my previous attachment referred to. The inward` movement of the arms E E under the action of the pull-spring e is limited by pins g g', Fig. 2, on the slide.

The detailed construction of the stop-cam T in Fig. 1..) In my former attachment this` 2 :nantes on the vibrator to limit the motion of the latter have not been shown, as they may be precisely the same as those described in my previous application cited.

y I claim as my invention- 1. The combination of the vibrator of a but` ton-hole sewing mechanism, carrying springarms E E', with a rotary cam for acting on said arms and a stop-cam to limit the extent of motion of the said vibrator, the two cams being mounted on the same pivot-post, substantially as set forth.

2. The combination of the vibrator and slide of a button-hole sewing mechanism, the said vibrator carrying spring-arms E E', with a rotary cam for acting on said arms, astop-cam to limit 'the extent of motion of the vibrator, and a diskwith a cam-groove for impart-ing feed motion to the slide, the two cams and the feedv disk all being mounted on the same pivot-post,

lsubstantially as described'.

vtwo subscribing witnesses.

3. The combination ofthe vibrator and slide of a button-hole sewing mechanism and cloth-V clamp carried thereby with the needle-bar of 25 a sewing-machine, bell-crank lever D, transverse lever F, pivoted to the base, and carrying a pawl and a ratchet-wheel operated thereby, to impart motion to the said vibrator and slide, substantially as set forth.

4. The combination of the vibrator and slide of a button-hole sewing mechanism and clothclamp carried thereby with a friction feeddisk, N, for imparting a longitudinal feed motion to the slide, arm l', lever F, carrying a. pin, Z, bell-crank lever D, and needle-bar of the sewing-machine, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of DANL. MILLS.`

W'itnesses:

HARRY SMITH, HUBERT HowsoN. 

